I think they carried a Shrike for a just in case if needed situation. You can make out the tail fin of another Paveway I on the i/b pylons of #401 & 410 while 402 has 6 Mk-82s on the right side so no LGB on the middle pylon. Also note parts of the bottom of 401 looks to be grey, probably a build up of dirt and grime that just got a quick wipe down while the nose gear doors are still white. One last item they all have chaff installed, the blue under the tail.
edit: here is 401 with Snakeyes and LGBs: